Estates

Estates of the realm. The powers that have the administration
of affairs in their hands. The three estates of our own realm are the
Lords Spiritual, the Lords Temporal, and the Commons; popularly
speaking, the public press is termed the fourth estate. It is a great
mistake to call the three estates of England the Sovereign, the Lords,
and the Commons, as many do. The word means that on which the realm
stands. (Latin, sto, to stand.) (See Fourth Estate.)

“Herod ... made a supper to his ... chief estates.”—Mark vi. 21.

“The king and the three estates of the realm assembled in
parliament.” —Collect for Nov. 5.